01025nas a2200133   4500008004100000245007900041210006800120300001000188490000900198520054400207100002200751700002100773856009700794       2007                        eng d00aOn the genus Diadocidia (Diptera, Sciaroidea, Diadocidiidae) in Costa Rica0 agenus Diadocidia Diptera Sciaroidea Diadocidiidae in Costa Rica  a33-380 v15863 aThe genus Diadocidia Ruthe is shown for the first time to be present in Costa Rica. Three species were found: Diadocidia nigripalpis Edwards, hitherto known to occur in the south of Brazil, and two new species, hybrida and similis. While nigripalpis is confirmed to belong to the subgenus Adidocidia Lastovka & Matile, both hybrida and similis cannot be classified on a subgeneric level, since their morphology includes features typical of both Diadocidia s. str. and Adidocidia. A key is provided to the Costa Rican species of Diadocidia.1 aJaschhof, Mathias1 aJaschhof, Catrin  uhttp://www.online-keys.net/sciaroidea/2000_/Jaschoff_Jaschoff2007_Zootaxa1586_Diadocidia.pdf